Isle of Sheppey
From Tardis Wiki, the free Doctor Who reference
The Isle of Sheppey was an island on Earth.
In the 22nd century, human miners worked on mining acid on the island. An electrical surge resulted in a Ganger being able to act on its own accord. It killed its former controller.
In another mining facility, where a solar tsunami resulted in a group of four Gangers becoming self-aware, Buzzer spoke of the event. (TV: The Rebel Flesh)
